D. B. Sanders
A5011211151- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
- Astrophysical Phenomena and Observations
- Astronomical Observations and Instrumentation
- Gamma-ray bursts and supernovae
- Spectroscopy and Laser Applications
- Astrophysics and Cosmic Phenomena
- Adaptive optics and wavefront sensing
- Atmospheric Ozone and Climate
- Radio Astronomy Observations and Technology
- Astro and Planetary Science
- Calibration and Measurement Techniques
- Scientific Research and Discoveries
- Atomic and Molecular Physics
- Remote Sensing in Agriculture
- History and Developments in Astronomy
- CCD and CMOS Imaging Sensors
- Particle Detector Development and Performance
- Particle Accelerators and Free-Electron Lasers
- Geophysics and Gravity Measurements
- Nuclear Physics and Applications
- nanoparticles nucleation surface interactions
- Cosmology and Gravitation Theories
University of Hawaii System
2015-2024
University of Hawaiʻi at Mānoa
2003-2024
University of Mississippi
1999-2024
University of Hawaii–West Oahu
2023
Victoria Hospital
2020-2023
Rush University Medical Center
2023
Oxford University Press (United Kingdom)
2023
University of Miami
2022
Rush University
2022
FWRadiology
2022
▪ Abstract At luminosities above 10 11 [Formula: see text], infrared galaxies become the dominant population of extragalactic objects in local Universe (z ≲ 0.3), being more numerous than optically selected starburst and Seyfert quasi-stellar at comparable bolometric luminosity. The trigger for intense emission appears to be strong interaction/merger molecular gas-rich spirals, bulk luminosity all but most luminous is due dust heating from an within giant clouds. highest (L ir > 12...
An evolutionary connection between ultraluminous infrared galaxies and quasars is deduced from the observations of all 10 with luminosities L(8-1000 µm) ~ 12 L 0 , taken a flux-limited sample bright galaxies.Images show that nearly are strongly interar•ing merger systems exceptionally luminous nuclei.Millimeter-wave CO these objects typically contain 0.5-2 x M H2 .Optical spectra indicate mixture starburst active galactic nucleus (AGN) energy sources, both which apparently fueled by...
We explore the inter-relationships between mass, star-formation rate and environment in SDSS, zCOSMOS other surveys. The differential effects of mass are completely separable to z ~ 1, indicating that two distinct processes operating, "mass-quenching" "environment-quenching". Environment-quenching, at fixed over-density, evidently does not change with epoch suggesting it occurs as large-scale structure develops Universe. observed constancy mass-function shape for star-forming galaxies,...
The Cosmic Evolution Survey (COSMOS) is designed to probe the correlated evolution of galaxies, star formation, active galactic nuclei (AGN) and dark matter (DM) with large-scale structure (LSS) over redshift range z $> 0.5 $ 6. survey includes multi-wavelength imaging spectroscopy from X-ray radio wavelengths covering a 2 $\sq$°area, including HST imaging. Given very high sensitivity resolution these datasets, COSMOS also provides unprecedented samples objects at greatly reduced cosmic...
IRAS flux densities, redshifts, and infrared luminosities are reported for all sources identified in the Revised Bright Galaxy Sample (RBGS), a complete flux-limited survey of extragalactic objects with total 60 μm density greater than 5.24 Jy, covering entire sky surveyed by at Galactic latitudes |b| > 5°. The RBGS includes 629 objects, median mean sample redshifts 0.0082 0.0126, respectively, maximum redshift 0.0876. supersedes previous two-part Samples (BGS1+BGS2), which were compiled...
ABSTRACT We present the COSMOS2015 24 catalog, which contains precise photometric redshifts and stellar masses for more than half a million objects over 2deg 2 COSMOS field. Including new <?CDATA ${{YJHK}}_{{\rm{s}}}$?> images from UltraVISTA-DR2 survey, Y-band Subaru/Hyper-Suprime-Cam, infrared data Spitzer Large Area Survey with Hyper-Suprime-Cam legacy program, this near-infrared-selected catalog is highly optimized study of galaxy evolution environments in early universe. To maximize...
We present accurate photometric redshifts (photo-z) in the 2-deg2 COSMOS field. The are computed with 30 broad, intermediate, and narrowbands covering UV (Galaxy Evolution Explorer), visible near-IR (NIR; Subaru, Canada–France–Hawaii Telescope (CFHT), United Kingdom Infrared Telescope, National Optical Astronomy Observatory), mid-IR (Spitzer/IRAC). A χ2 template-fitting method (Le Phare) was used calibrated large spectroscopic samples from Very Large Visible Multi-Object Spectrograph Keck...
zCOSMOS is a large-redshift survey that being undertaken in the COSMOS field using 600 hr of observation with VIMOS spectrograph on 8 m VLT. The designed to characterize environments galaxies from 100 kpc scales galaxy groups up Mpc scale cosmic web and produce diagnostic information active galactic nuclei. consists two parts: (1) zCOSMOS-bright, magnitude-limited I-band IAB < 22.5 sample about 20,000 0.1 z 1.2 covering whole 1.7 deg2 ACS field, for which parameters at ~ 0.7 are be directly...
We present photometric observations of an apparent Type Ia supernova (SN Ia) at a redshift ~1.7, the farthest SN observed to date. The supernova, 1997ff, was discovered in repeat observation by Hubble Space Telescope (HST) Deep Field-North (HDF-N) and serendipitously monitored with NICMOS on HST throughout Thompson et al. Guaranteed-Time Observer (GTO) campaign. type can be determined from host galaxy type: evolved, red elliptical lacking enough recent star formation provide significant...
We present imaging data and photometry for the COSMOS survey in 15 photometric bands between 0.3 2.4 μm. These include taken on Subaru 8.3 m telescope, KPNO CTIO 4 telescopes, CFHT 3.6 telescope. Special techniques are used to ensure that relative calibration is better than 1% across field of view. The absolute accuracy from standard-star measurements found be 6%. corrected using galaxy spectra, providing colors accurate 2% or better. Stellar counts agree well with expected values. Finally,...
We estimate the galaxy stellar mass function and density for star-forming quiescent galaxies with 0.2<z<4. construct a deep K<24 sample of 220000 selected using UltraVISTA DR1 data release. Our analysis is based on precise 30-band photometric redshifts. By comparing these redshifts 10800 spectroscopic from zCOSMOS bright faint surveys, we find precision sigma(dz/(1+z))=0.008 at i<22.5 sigma(dz/(1+zs))=0.03 1.5<z<4. derive correct Eddington bias. mass-dependent evolution global populations....
We follow the galaxy stellar mass assembly by morphological and spectral type in COSMOS 2 deg2 field. derive functions densities from z = to 0.2 using 196,000 galaxies selected at F3.6 μm > 1 μJy with accurate photometric redshifts ( i+ < 22.5). Using a classification, we find that ∼ is an epoch of transition quiescent galaxies. Their density increases 1.1 dex between 1.5–2 0.8–1 (Δt 2.5 Gyr), but only 0.3 0.1 6 Gyr). Then, add information 80%–90% massive have elliptical morphology 0.8....
The Spitzer-COSMOS survey (S-COSMOS) is a Legacy program (Cycles 2+3) designed to carry out uniform deep of the full 2 sq deg COSMOS field in all seven Spitzer bands (3.6, 4.5, 5.6, 8.0, 24.0, 70.0, 160.0 u). This paper describes parameters, mapping strategy, data reduction procedures, achieved sensitivities date, and complete set for future reference. We show that observed infrared backgrounds S-COSMOS are within 10% predicted background levels. fluctuations at 24u have been measured do not...
view Abstract Citations (740) References (105) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Continuum Energy Distributions of Quasars: Shapes and Origins Sanders, D. B. ; Phinney, E. S. Neugebauer, G. Soifer, T. Matthews, K. observations from ~0.3 nm to 6 cm (10^9.7^-10^18^ Hz) are presented for 109 bright quasars the Palomar-Green (PG) survey. Two-thirds have been detected in infrared at wavelengths between 10 100 microns. All PG appear emit bulk their...
We present spectroscopic redshifts of a large sample galaxies with IAB < 22.5 in the COSMOS field, measured from spectra 10,644 objects that have been obtained first two years observations zCOSMOS-bright redshift survey. These include statistically complete subset 10,109 objects. The average accuracy individual is 110 km s−1, independent redshift. reliability described by Confidence Class has empirically calibrated through repeat over 600 galaxies. There very good agreement between and...
Spitzer IRAC selection is a powerful tool for identifying luminous AGN. For deep data, however, the AGN wedges currently in use are heavily contaminated by star-forming galaxies, especially at high redshift. Using large samples of and high-redshift galaxies COSMOS, we redefine criteria surveys. The new designed to be both highly complete reliable, incorporate best aspects current infrared power-law while excluding redshift selected via BzK, DRG, LBG, SMG criteria. At QSO-luminosities log...
view Abstract Citations (562) References (197) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Optical Spectroscopy of Luminous Infrared Galaxies. II. Analysis the Nuclear and Long-Slit Data Veilleux, S. ; Kim, D. -C. Sanders, B. Mazzarella, J. M. Soifer, T. A spectroscopic survey a sample 200 luminous IRAS galaxies (LIGs: L_ir_^7^ > 3 x 10^10^ L_sun_; H_0_ = 75 km s^-1^ Mpc^-1^) was carried out using Palomar 5 meter University Hawaii 2.2 m telescopes. Kim et...
view Abstract Citations (575) References (24) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Warm Ultraluminous Galaxies in the IRAS Survey: The Transition from Galaxy to Quasar? Sanders, D. B. ; Soifer, T. Elias, J. H. Neugebauer, G. Matthews, K. Of 90 extragalactic objects chosen catalog on basis of brightness at 60 microns and "warm" infrared color [fnu_(25 microns)/fnu_(60 microns) > 0.2], 12 have luminosities characteristic quasars. These ultraluminous...
We have performed an absorption-line survey of outflowing gas in 78 starburst-dominated, infrared-luminous galaxies. This is the largest study superwinds at z ≲ 3. Superwinds are found almost all galaxies, and changes detection rate with SFR—winds twice as often ultraluminous infrared galaxies (ULIRGs) less-luminous galaxies—reflect different wind geometries. The maximum velocities we measure 600 km s-1, though most has lower (100-200 s-1). (One galaxy exceeding 1000 s-1.) Velocities LINERs...
The Cosmic Evolution Survey (COSMOS) was initiated with an extensive allocation (590 orbits in Cycles 12-13) using the Hubble Space Telescope (HST) for high resolution imaging. Here we review characteristics of HST imaging Advanced Camera Surveys (ACS) and parallel observations NICMOS WFPC2. A square field (1.8$\sq$\deg) has been imaged single-orbit ACS I-F814W exposures 50% completeness sources 0.5\arcsec diameter at I$_{AB} $ = 26.0 mag. is a key part COSMOS survey, providing very...
view Abstract Citations (639) References (48) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The IRAS Bright Galaxy Sample. II. Sample and Luminosity Function Soifer, B. T. ; Sanders, D. Madore, F. Neugebauer, G. Danielson, E. Elias, J. H. Lonsdale, Carol Rice, W. L. A statistically complete sample of 324 the brightest infrared galaxies discovered at 60 microns in all-sky survey is described. results show that far-infrared emission a significant luminosity...
ALMA Cycle 2 observations of the long wavelength dust emission in 145 star-forming galaxies are used to probe evolution ISM. We also develop physical basis and empirical calibration (with 72 low-z z ~ galaxies) for using continuum as a quantitative interstellar medium (ISM) masses. The with highest star formation rates (SFRs) at <z> = 2.2 4.4 have gas masses up 100 times that Milky Way mass fractions reaching 50 80%, i.e. 1 - 4 their stellar find single high-z law: SFR 35 M_ mol^0.89 x...
The Chandra COSMOS Survey (C-COSMOS) is a large, 1.8 Ms, Chandra} program that has imaged the central 0.5 sq.deg of field (centered at 10h, +02deg) with an effective exposure ~160ksec, and outer 0.4sq.deg. area ~80ksec. limiting source detection depths are 1.9e-16 erg cm(-2) s(-1) in Soft (0.5-2 keV) band, 7.3e(-16) cm^-2 s^-1 Hard (2-10 5.7e(-16) Full (0.5-10 band. Here we describe strategy, design execution C-COSMOS survey, present catalog 1761 point sources detected probability being...
view Abstract Citations (457) References (43) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Molecular Gas in Luminous Infrared Galaxies Sanders, D. B. ; Scoville, N. Z. Soifer, T. CO (1 -> 0) emission profiles are presented for 60 infrared luminous, [L-ir_(8-1000 microns) = 5 x 10^10^-3 10^12^ L_sun_, H_0_ 75 km s^-1^ Mpc^-1^], bright (F_60 micron_ > 5.24 Jy), IRAS galaxies at redshifts 1500-25,000 Most of these sufficiently distant that a single 55" beam...